Now you should be albe to take on ALMOST anybody, with this build I slayed a vayne who autoattacked my friends for damage off 1700, I easy slayed her. But you are still not OP tank like rammus, That's very important to remember.

At this part you should be a bit hard to kill, since you run so fast, and do pretty much damage to, do not forget to use ulti like all the time, since it don't have so long CD, and heals 20% damage dealth to champions, and heals 10% damage done to minons. But you are not like rammus who can run into 5 guys and live, you are just an off-tank.

Play a bit passive, but not to passive, so they think you are afraid of them. But let them push, so you always are near your turret, since your ''E'' spells stuns the opponent if they got more hp in % then you got, stay near tower untill they towerdive you, stun them, and nuke them. Keep doing this untill you feel that you manage to go on without.